C++ (Cpp) BERDecodeError Examples

Example #1

File: eccrypto.cpp Project: randombit/hacrypto

void DL_PublicKey_EC<EC>::BERDecodeKey2(BufferedTransformation &bt, bool parametersPresent, unsigned int size)
{
	typename EC::Point P;
	if (!GetGroupParameters().GetCurve().DecodePoint(P, bt, size))
		BERDecodeError();
	SetPublicElement(P);
}

Example #2

File: eccrypto.cpp Project: randombit/hacrypto

void DL_GroupParameters_EC<EC>::BERDecode(BufferedTransformation &bt)
{
	byte b;
	if (!bt.Peek(b))
		BERDecodeError();
	if (b == OBJECT_IDENTIFIER)
		Initialize(OID(bt));
	else
	{
		BERSequenceDecoder seq(bt);
			word32 version;
			BERDecodeUnsigned<word32>(seq, version, INTEGER, 1, 1);	// check version
			EllipticCurve ec(seq);
			Point G = ec.BERDecodePoint(seq);
			Integer n(seq);
			Integer k;
			bool cofactorPresent = !seq.EndReached();
			if (cofactorPresent)
				k.BERDecode(seq);
			else
				k = Integer::Zero();
		seq.MessageEnd();

		Initialize(ec, G, n, k);
	}
}

Example #3

File: gf2n.cpp Project: prakhs123/cryptopp

void PolynomialMod2::BERDecodeAsOctetString(BufferedTransformation &bt, size_t length)
{
	BERGeneralDecoder dec(bt, OCTET_STRING);
	if (!dec.IsDefiniteLength() || dec.RemainingLength() != length)
		BERDecodeError();
	Decode(dec, length);
	dec.MessageEnd();
}

Example #4

File: ec2n.cpp Project: freegroup/DigitalSimulator

EC2N::Point EC2N::BERDecodePoint(BufferedTransformation &bt) const
{
	SecByteBlock str;
	BERDecodeOctetString(bt, str);
	Point P;
	if (!DecodePoint(P, str, str.size))
		BERDecodeError();
	return P;
}

Example #5

File: luc.cpp Project: someone9388/cryptopp

void InvertibleLUCFunction::BERDecode(BufferedTransformation &bt)
{
	BERSequenceDecoder seq(bt);

	Integer version(seq);
	if (!!version)  // make sure version is 0
		BERDecodeError();

	m_n.BERDecode(seq);
	m_e.BERDecode(seq);
	m_p.BERDecode(seq);
	m_q.BERDecode(seq);
	m_u.BERDecode(seq);
	seq.MessageEnd();
}

Example #6

File: eccrypto.cpp Project: randombit/hacrypto

void DL_PrivateKey_EC<EC>::BERDecodeKey2(BufferedTransformation &bt, bool parametersPresent, unsigned int size)
{
	BERSequenceDecoder seq(bt);
		word32 version;
		BERDecodeUnsigned<word32>(seq, version, INTEGER, 1, 1);	// check version

		BERGeneralDecoder dec(seq, OCTET_STRING);
		if (!dec.IsDefiniteLength())
			BERDecodeError();
		Integer x;
		x.Decode(dec, dec.RemainingLength());
		dec.MessageEnd();
		if (!parametersPresent && seq.PeekByte() != (CONTEXT_SPECIFIC | CONSTRUCTED | 0))
			BERDecodeError();
		if (!seq.EndReached() && seq.PeekByte() == (CONTEXT_SPECIFIC | CONSTRUCTED | 0))
		{
			BERGeneralDecoder parameters(seq, CONTEXT_SPECIFIC | CONSTRUCTED | 0);
			AccessGroupParameters().BERDecode(parameters);
			parameters.MessageEnd();
		}
		if (!seq.EndReached())
		{
			// skip over the public element
			SecByteBlock subjectPublicKey;
			unsigned int unusedBits;
			BERGeneralDecoder publicKey(seq, CONTEXT_SPECIFIC | CONSTRUCTED | 1);
			BERDecodeBitString(publicKey, subjectPublicKey, unusedBits);
			publicKey.MessageEnd();
			Element Q;
			if (!(unusedBits == 0 && GetGroupParameters().GetCurve().DecodePoint(Q, subjectPublicKey, subjectPublicKey.size())))
				BERDecodeError();
		}
	seq.MessageEnd();

	SetPrivateExponent(x);
}

Example #7

File: rsa.cpp Project: AmesianX/encryption-library

InvertableRSAFunction::InvertableRSAFunction(BufferedTransformation &bt)
{
	BERSequenceDecoder seq(bt);

	Integer version(seq);
	if (!!version)  // make sure version is 0
		BERDecodeError();

	n.BERDecode(seq);
	e.BERDecode(seq);
	d.BERDecode(seq);
	p.BERDecode(seq);
	q.BERDecode(seq);
	dp.BERDecode(seq);
	dq.BERDecode(seq);
	u.BERDecode(seq);
}